public class Example3_5
{
	public static void main(String args[])
	{
		long sum=0,a=8,item=a,n=12,i=1;
		for(i=1;i<n;i++)
		{
			sum = sum+item;
			item = item*10 + a;
		}
		System.out.println(sum);
	}
}
